▲Hydroxypropyl methyl cellulose (HPMC)ke phofo e tšoeu e sa nkheng, e sa latsoeheng, e seng chefo. Ka mor'a ho qhibiliha ka ho feletseng ka metsing, hydroxypropyl methyl cellulose e tla etsa "viscous colloid" e hlakileng.
▲ Lisebelisoa tse ka sehloohong tsa hydroxypropyl methyl cellulose (HPMC): k'hothone e hloekisitsoeng, methyl chloride, propylene oxide, le lisebelisoa tse ling tse tala, caustic soda, acid, toluene, isopropanol, joalo-joalo.
Papiso ea melemo le bofokoli ba hydroxypropyl methyl cellulose:
1.Pure hydroxypropyl methyl cellulose HPMC e hlephileng ka pono mme e na le boima bo fokolang ba bongata, ka tekanyo ea 0.3-0.4 / ml.
HPMC e senyehileng e na le metsi a matle haholo 'me e ikutloa e le boima ho feta, e fapaneng haholo le sehlahisoa sa sebele ka chebahalo.
2.Pure hydroxypropyl methyl cellulose Tharollo ea metsi ea HPMC e hlakile, phetisetso ea khanya e phahameng, sekhahla sa ho boloka metsi> 97%.
Tharollo e entsoeng ka metsi ea HPMC e litšila e batla e le litšila, 'me sekhahla sa ho boloka metsi se thata ho fihla ho 80%.
3.Pure HPMC ha ea lokela ho fofonela ammonia, starch le alcohols.
Adulterated HPMC hangata e ka fofonela mefuta eohle ea litatso, leha e sa latsoehe, e tla utloa e le boima.
4.Hydroxypropyl methyl cellulose phofo ea HPMC e hloekileng e na le fibrous tlas'a microscope kapa khalase e hōlisang.
Adulterated HPMC ka bonoa e le granular solids kapa kristale tlas'a microscope kapa magnifying glass.
Ho tsoa likarolong life ho tseba melemo le mathata a hydroxypropyl methyl cellulose?
1. degree e tšoeu
Le hoja bosoeu bo ke ke ba tseba hore na HPMC e bonolo ho e sebelisa, 'me haeba li-whitening agents li eketsoa nakong ea tlhahiso, li tla ama boleng ba eona. Leha ho le joalo, boholo ba lihlahisoa tse ntle li na le bosoeu bo botle.
2.Ho loka
Bokhabane ba HPMC ka kakaretso bo na le 80 mesh le 100 mesh, 'me botle bo botle, ka kakaretso, bo betere.
3.Phetiso
Behahydroxypropyl methyl cellulose (HPMC)ka metsing ho etsa colloid e bonaletsang, le ho hlahloba phetiso ea khanya ea eona. Ha phetisetso ea khanya e phahame, e molemo, e bontšang hore ho na le lintho tse fokolang tse sa tsitsang ho eona. Ho kenella ha li-reactor tse otlolohileng hangata ho lokile, athe tse tšekaletseng li mpefala.
4.Palo
Ha matla a khoheli a itseng a le kholoanyane, boima bo ba betere. Ntho e ikhethang e kholo, ka kakaretso hobane litaba tsa sehlopha sa hydroxypropyl ho eona li phahame, 'me litaba tsa sehlopha sa hydroxypropyl li phahame, ho boloka metsi ho molemo.
Nako ea poso: Apr-25-2024